Play Jimmy Neutron vs. Jimmy Negatron (prototype) Online – Game Boy Advance (GBA) Game

Game Overview

Ever wondered what happens when Jimmy Neutron’s genius clashes with his evil, mirror-universe counterpart? Jimmy Neutron vs. Jimmy Negatron for the Game Boy Advance throws you into that exact showdown! This prototype gem—packed with quirky charm and fast-paced action—lets you jump, blast, and puzzle-solve your way through Retroville as the boy genius himself. With Negatron causing chaos, you’ll wield an arsenal of wild inventions, outsmart enemies, and race against time in a battle of brains versus… well, more brains (just way meaner).

Though it never got an official release, this lost slice of early 2000s nostalgia feels like a hidden level from the Jimmy Neutron universe—think Mega Man meets Nickelodeon flair. Whether you’re a die-hard fan or a retro collector, it’s a quirky, fun-sized adventure that makes you wish it had hit store shelves. Who wouldn’t want to zap robots with a shrink ray while snarking at your evil twin? Exactly.